stm32f030c8 读pcf8563

songwei2030 提问时间：2015-7-22 09:08 /

用stm32f030c8硬件iic 读pcf8563 实时时钟，在初步调试的时候就出现了问题，每次过8s就会week month数据就变了，很有规律，没找出什么原因,求助啊

下面是程序，希望大家给予指正，谢谢。

/*********************************************************************************
Function : InitializeI2cGpio
Description: 初始化i2c的GPIO
Input    : 无
Output    : 无
Return    : 无
Others    :
*********************************************************************************/
static bool InitializeI2cGpio ( unsigned char type )
{
GPIO_InitTypeDef  GPIO_InitStructure;

if( type >= I2Cn )
      return false;

/* Enable SCK and SDA GPIO clocks */
RCC_AHBPeriphClockCmd(ST_I2C_CLK_GPIO_CLK_TABLE[type] | ST_I2C_SDA_GPIO_CLK_TABLE[type] , ENABLE);

GPIO_PinAFConfig(ST_I2C_CLK_GPIO_PORT_TABLE[type], ST_I2C_CLK_SOURCE_TABLE[type], ST_I2C_CLK_AF_TABLE[type]);
GPIO_PinAFConfig(ST_I2C_SDA_GPIO_PORT_TABLE[type], ST_I2C_SDA_SOURCE_TABLE[type], ST_I2C_SDA_AF_TABLE[type]);

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;//开漏
GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;//sw
// GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

/* I2C SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = ST_I2C_CLK_PIN_TABLE[type];
GPIO_Init(ST_I2C_CLK_GPIO_PORT_TABLE[type], &GPIO_InitStructure);

/* I2C SDA pin configuration */
GPIO_InitStructure.GPIO_Pin = ST_I2C_SDA_PIN_TABLE[type];
GPIO_Init(ST_I2C_SDA_GPIO_PORT_TABLE[type], &GPIO_InitStructure);

return true;
}

/*********************************************************************************
Function : InitializeI2cConfig
Description: 初始化硬件I2C配置
Input    : clock = true 8M_400k false 8M_100k
Output    : 无
Return    : 无
Others    :
*********************************************************************************/
static bool InitializeI2cConfig ( unsigned char type ,bool clock )
{
I2C_InitTypeDef I2C_InitStructure;

if( type >= I2Cn )
      return false;

/* Enable the I2C periph source*/
// RCC_I2CCLKConfig(RCC_I2C1CLK_HSI);
RCC_I2CCLKConfig(RCC_I2C1CLK_SYSCLK);//48MHZSW
RCC_APB1PeriphClockCmd(ST_I2C_CLK_TABLE[type], ENABLE); //Enable I2C1 Clock
//初始I2C时钟 SW
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Enable;
I2C_InitStructure.I2C_DigitalFilter = 0x00;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
if( clock )
   // I2C_InitStructure.I2C_Timing = EE_I2C_8MHZ_400KHZ_TIMING;//晶振修改为8MHZ sw
      I2C_InitStructure.I2C_Timing =  0x30E32E44;//0x00A0184D;//48M-400K
else
      I2C_InitStructure.I2C_Timing = EE_I2C_8MHZ_100KHZ_TIMING;

I2C_Init(ST_I2C_TABLE[type], &I2C_InitStructure);

I2C_Cmd(ST_I2C_TABLE[type], ENABLE);

return true;
}

*********************************************************************************
Function : InitializeI2c
Description: 初始化i2c
Input    : 无
Output    : 无
Return    : 无
Others    :
*********************************************************************************/
void  InitializeI2c ( bool clock )
{
for(unsigned char i=0;i<I2Cn;i++)
{

   InitializeI2cGpio(i);
   InitializeI2cConfig(i , clock );

}
}

上面是初始化硬件IIC，剩下的会在下面跟上

赞收藏评论6 发布时间：2015-7-22 09:08

6个回答

songwei2030 回答时间：2015-7-22 09:09:00

*******************************************************************************
Function : I2CDeviceRecv
Description: I2C主机接收数据
Input    : 无
Output    : 无
Return    : 无
Others    :
*******************************************************************************/
unsigned char I2CDeviceRecv( struct t_iic_device *p_device )
{
uint32_t timeout = 0;
uint32_t data_num;
unsigned char  data;

I2C_LOSE_POWE_HANDLE();

if (( p_device->reg_len == 0) || ( p_device->data_len == 0))
      return I2C_OPERATE_FAIL ;

if ( p_device->reg_len > 4 )
      return I2C_OPERATE_FAIL ;

add_index  = p_device->reg_len;
data_index = 0;

/* Test on BUSY Flag */
timeout = E2PROM_LONG_TIMEOUT;
while( I2C_GetFlagStatus(p_device->iic_base, I2C_ISR_BUSY) != RESET )
{
      //操作前先喂狗
      FeedIWDG();
      FeedOSWDG();
      I2C_LOSE_POWE_HANDLE();
      if((timeout--) == 0)
         return I2C_OPERATE_FAIL;
}

/* Configure slave address, nbytes, reload and generate start */
I2C_TransferHandling(p_device->iic_base, p_device->dev_addr, p_device->reg_len, I2C_SoftEnd_Mode, I2C_Generate_Start_Write);

/* Wait until TXIS flag is set */
timeout = E2PROM_LONG_TIMEOUT;
while(I2C_GetFlagStatus(p_device->iic_base, I2C_ISR_TXIS) == RESET)
{
      //操作前先喂狗
      FeedIWDG();
      FeedOSWDG();
      I2C_LOSE_POWE_HANDLE();
      if((timeout--) == 0)
         return I2C_OPERATE_FAIL;
}

/* Send memory address */
while( add_index )
{
      I2C_SendData( p_device->iic_base , p_device->p_reg_addr[add_index-1] );
      add_index--;

      if( add_index == 0 )
      {
         /* Wait until TC flag is set */
         timeout = E2PROM_LONG_TIMEOUT;
         while(I2C_GetFlagStatus(p_device->iic_base, I2C_ISR_TC) == RESET)
         {
            //操作前先喂狗
            FeedIWDG();
            FeedOSWDG();
            I2C_LOSE_POWE_HANDLE();
            if((timeout--) == 0)
                  return I2C_OPERATE_FAIL;
         }
      }
      else
      {
         /* Wait until TC flag is set */
         timeout = E2PROM_LONG_TIMEOUT;
         while(I2C_GetFlagStatus(p_device->iic_base, I2C_ISR_TXIS) == RESET)
         {
            //操作前先喂狗
            FeedIWDG();
            FeedOSWDG();
            I2C_LOSE_POWE_HANDLE();
            if((timeout--) == 0)
                  return I2C_OPERATE_FAIL;
         }
      }
}

data_num = (p_device->data_len)/255;
data = (p_device->data_len)%255;
while( data_num )
{
      data_index = 255;
      /* Configure slave address, nbytes, reload, end mode and start or stop generation */
      I2C_TransferHandling(p_device->iic_base, p_device->dev_addr, data_index, I2C_AutoEnd_Mode, I2C_Generate_Start_Read);

      /* Wait until all data are received */
      while ( data_index )
      {
         /* Wait until RXNE flag is set */
         timeout = E2PROM_LONG_TIMEOUT;
         while(I2C_GetFlagStatus(p_device->iic_base, I2C_ISR_RXNE) == RESET)
         {
            //操作前先喂狗
            FeedIWDG();
            FeedOSWDG();
            I2C_LOSE_POWE_HANDLE();
            if((timeout--) == 0)
                  return I2C_OPERATE_FAIL;
         }

         /* Read data from RXDR */
         *(p_device->p_data) = I2C_ReceiveData(p_device->iic_base);
         /* Point to the next location where the byte read will be saved */
         (p_device->p_data)++;

         /* Decrement the read bytes counter */
         data_index--;
      }
      data_num--;
}

data_index = data;
if( data_index !=0 )
{
      /* Configure slave address, nbytes, reload, end mode and start or stop generation */
      I2C_TransferHandling(p_device->iic_base, p_device->dev_addr, (unsigned char)data_index, I2C_AutoEnd_Mode, I2C_Generate_Start_Read);

      /* Wait until all data are received */
      while ( data_index )
      {
         /* Wait until RXNE flag is set */
         timeout = E2PROM_LONG_TIMEOUT;
         while(I2C_GetFlagStatus(p_device->iic_base, I2C_ISR_RXNE) == RESET)
         {
            //操作前先喂狗
            FeedIWDG();
            FeedOSWDG();
            I2C_LOSE_POWE_HANDLE();
            if((timeout--) == 0)
                  return I2C_OPERATE_FAIL;
         }

         /* Read data from RXDR */
         *(p_device->p_data) = I2C_ReceiveData(p_device->iic_base);
         /* Point to the next location where the byte read will be saved */
         (p_device->p_data)++;

         /* Decrement the read bytes counter */
         data_index--;
      }
}

/* Wait until STOPF flag is set */
timeout = E2PROM_LONG_TIMEOUT;
while(I2C_GetFlagStatus(p_device->iic_base, I2C_ISR_STOPF) == RESET)
{
      //操作前先喂狗
      FeedIWDG();
      FeedOSWDG();
      I2C_LOSE_POWE_HANDLE();
      if((timeout--) == 0)
         return I2C_OPERATE_FAIL;
}

/* Clear STOPF flag */
I2C_ClearFlag(p_device->iic_base, I2C_ICR_STOPCF);

/* If all operations OK */
return I2C_OPERATE_SUCC;
}

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songwei2030 回答时间：2015-7-22 09:10:05

RTC时钟的初始化
void InitializeTimerManage( void )
{
unsigned char config1 = 0x00;
                              /*reg_ctrl1
                                       STOP = 0;SW*/
unsigned char config2 = 0x01;
                                    /*Reg_ctrl2
                                          AIE = 0;
                                          TIE = 1;
                                       TI/TP = 0; SW */
unsigned char timer1 = 0x82;    /*reg_timer
                                 TE = 1
                                 tiemr source clock  = 1 hz*/

unsigned week ;
struct t_rtc_time time ;
struct t_date* p_data = ( struct t_date* )(&(time.week)) ;
struct t_clock* p_clock = ( struct t_clock* )(&(time.sec)) ;
WritePCF8563( PCF8563_REG_CTRL1 , 1 , &config1); //使能RTC
ReadPCF8563( PCF8563_REG_CTRL1 , 1 , &config1);
WritePCF8563( PCF8563_REG_CTRL2 , 1 , &config2);  //使能AIE TIEsw
ReadPCF8563( PCF8563_REG_CTRL2 , 1 , &config2);
WritePCF8563(PCF8563_TIME_CTRL , 1 , &timer1);
   ReadPCF8563(PCF8563_TIME_CTRL , 1 , &timer1);
//读取成功
if( ReadRTCTime( (unsigned char*)&time ) )
{

         memcpy( &time , &const_rtc_time , sizeof(struct t_rtc_time) );

      WriteRTCTime( (unsigned char*)&time );
      ReadRTCTime ( (unsigned char*)&time );
      time.week = week ;

      memcpy( &current_time , &time , sizeof( struct t_rtc_time ) ) ;

}
}

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songwei2030 回答时间：2015-7-22 09:12:25

这个是我验证pcf8563时做的代码验证
bool ReadPCF8563( uint32_t offset , uint32_t len , unsigned char* p_data )
{

unsigned char  reg_add ,loop  = 3;
unsigned char  result = false;

while( loop-- )
{
      //读取失败
   //if ( I2CDeviceRecv( &iic_deviece ) )
      if (I2C1_Read_NBytes(PCF8563_I2C_ADDR_READ, 0x02, 7, p_data));

      {
         result = true;
         break;
      }
}

return result;
}

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